Portable lathe.



I M aawzm.

J. W. FLEMMING.

PORTABLE LATHE. APPLICATION FILED OUT. 28, 1908. RENEWED JAN. 19, 1910.

952,564. Patented Mar. 22, 1910.

2 SHEETS-SHEBT 1.

Withesse s Inventor 35,, M$ I Attorney J. W. FLEMMING.

PORTABLE LATHE. APPLICATION FILED OCT. 28, 1908. RENEWED JAN. 19, 1910.

Patented Mar. 22, 1910.

2 SHEETS-SHEET 2.

Inventor I a w a $9,? Attorney Witnesses: (S t 14% 1 v UNITED STATESPATENT OFFICE.

JOHN WILLIAM FLEMMING, OF ALBANY, NEW YORK.

PORTABLE LATHE.

Application filed October 28, 1908, Serial No. 459,841.

To all whom "it may concern:

Be it known that I, JOHN WILLIAM FLEMMING, a citizen of the UnitedStates, residing at Albany, Albany county, New York, have inventedcertain new and useful Improvements in Portable Lathes, of which thefollowing is a specification.

This invention relates to improvements in that class of portable lathesdesigned for use in dressing the journals of the driving axles oflocomotives while the wheels are on the axles.

The improvements will be readily understood from the followingdescription taken in connection with the accompanying drawings in whichFigure 1 is a front elevation of a structure embodying my improvements:Fig. 2 an end elevation of the same: Fig. 3 a vertical longitudinalsection of the hollow tool-carrying arbor and its bearing: and Fig. 4 avertical transverse section of the arbor and its bearmg.

A diversity of scales is involved in the drawings.

In the drawings :1, indicates a locomotive driving-axle: 2, the drivingwheels fast thereon: 3, the lathe frame, in the form of an archstraddling the wheel and axle structure and having a central portionextending down between the wheels: 4:, endwise adjustable centerscarried by the outer portions of the lathe frame and engaging thecenters of the axle, whereby the lathe frame is accurately positionedrelative to the axle and held thereto: 5, inward portions of the latheframe disposed between the wheels and opposite the outer arms thereof:6, bolts extending through frame portions 5 and the outer arms andpassing between spokes of the wheels: 7 sleeves on these bolts, actingas distance pieces to prevent the arms being drawn inwardly by thestrain of the bolts: 8, an eye socketed into the upper portion of thelathe frame and adapted to receive a crane hook or other handlingappliance: 9, a spring connected with the lathe frame and eye in suchmanner that the lathe frame may be supported with some degree ofelasticity: 10, a half-bearing connected with the central part of thatportion of the lathe frame lying between the driving wheels, the bore ofthis half-bearing being concentric with the centers 4;: 11, boltsuniting the halfbearing 10 to the lathe frame: 12, thesecondhalf-bearing: 13, the joint of separation be- Specification of LettersPatent.

Patented Mar. 22, 1910.

Renewed January 19, 1910. Serial No. 588,911.

tween the two half-bearings, this joint being preferably in a plane atright angles to the general plane of the lathe frame: 14', jointbolts,illustrated as of swinging type, clamp ing the two half'bearingstogether to form a complete bearing concentric with centers 1: 15,binder screws in the outer arms of the lathe frame, to serve in bindingthe centers 4: after adjustment: 16, one-half of the hollow arborturning in the bearing: 17, the other half of the hollow arbor; 18, thejoint of separation between the two halves of the arbor: 19, aring-gear, illustrated as of worm type, formed in two halves andencircling the hollow arbor and secured to it, this gear seating in anannular groove formed in the bearing: 20, bolts securing the halves ofthe ring-gear to the halves of the arbor: 21, tool slides fitted forlongitudinal movement in grooves in the bore of the arbor, one toolslide being fitted in each of the arbor-halves, the end of one toolslide projecting outwardly from one end of the arbor while the end ofthe other tool slide projects outwardly from the other end of the arbor:22, an inwardly projecting tool carried by the outer end of each toolslide and adapted to operate on the bearings of the axle: 23, feedscrews journaled longitudinally in the arbor and threaded into the innerends of the tool slides: 24, star wheels on the outer ends of the feedscrews: 25, tappets secured at intervals in the outer ends of thebearing and adapted to be engaged in succession by the star wheels asthe journal turns in the bearing: 26, a worm housed in the bearing and,engaging the ring-gear: 27, the worm shaft: and 28, a shank on the wormshaft, adapted to be put into connection with a driving apparatus, such,for instance, as a flexible shaft or a portable motor.

This lathe is designed principally for roundhouse use in cases where itis desired to quickly dress the journals of driving axles withoutrecourse to the main repair shop. In applying the device, the lower halfof the bearing is to be removed, the arbor removed, bolts 6 and sleeves7 removed, and centers 4 retracted. The wheel and axle structure is torest on the floor in natural position and to be properly blocked againstrolling. The lathe structure is then to be let down till the centers 4coincide with the centers in the axle and centers 4 are then to beadjusted inwardly into proper engagelnent with the axle centers. Thehoisting eye being connected with the lathe structure through the mediumof a spring permits centers & to properly seat in the centers of theaxle without bringing extraordinary lifting strains on the wheel andaxle structure, in other words, the lathe structure yields downwardly.This act accurately positions the lathe structure so that the bearingwill be concentric with the axle. Tight adjustment of the centers &would tend to spring the arms of the lathe frame outwardly, and toprevent this the bolts (3 and sleeves 7 are employed, being appliedeither before or after the centers at are adjusted. The bolts (3 preventthe outward springing of the arms of the lathe frame under the influenceof centers 4: or otherwise and sleeves 7 prevent the inward springing ofthe arms of the lathe frame when the bolts are drawn up. The two halfarbors are then to be put in place around the axle after which the lowerhalf-bearing is to be firmly secured in place. Power being applied toshank 28 and the tools being properly adjusted to their work, thedressing of the axle ournals proceeds in an obvious manner, bothjournals being turned at one time.

I claim 1. A portable lathe comprising a frame having a pair of outeryokes each of which is adapted to straddle a wheel mounted 011 an axleand having a central portion to go between the wheels, centers carriedby the yoke ends and adapted to engage the axle centers and axledressing mechanism carried by the central portion of the frame.

2. A portable lathe comprising a frame having a pair of outer yokesadapted to straddle wheels mounted on an axle and having a centralportion to go between the wheels, means connecting the outer arms of theyokes with the central portion of the frame and adapted to go betweenthe spokes of the wheels, centers carried by the yoke ends and axledressing mechanism carried by the central portion of the frame.

3. In a portable lathe, the combination of a frame comprising side yokesadapted to inclose wheels mounted on an axle, a center portion, axledressing mechanism carried by the center portion of the frame, centerscarried by the yokes and a yielding supporting device carried by theframe.

4. In a portable lathe the combination of a frame, centers carried bythe frame adapted to engage a piece of work, a yielding device by whichthe frame may be supported connected with the frame serving to relievethe centers of a portion of the weight of the apparatus, and a toolcarried by the frame for operating on the piece of work.

JOHN \VILLIAM FLEMMING.

\Vitnesses FRANK FINERON, P. Gr. OULLIVAN.

